Wrench



(No Model.) A

` O7 W; HALE.

WRENCH;

No. 372,756. Patented Noma, 1887.

of the same, as clearly shown.

NITED' STATES ATHNT il F F ICE@ WRENCH.

SPECIFICATION forming part of Letters Patent No. 372,750, dated November 8, 1&8?.

Application filed May 26, 1887. Serial No. 239.502. (No mode-l.)

To all whom, it may concern.-

Be it known that I, GHARLns WM. HALE, a citizen of the United States, residing at Eureka, in the county of Greenwood and State of Kansas, have invented certain new and useful Improvements in Wrenches, of which the following is a specitication.

My invention relates to improvements in wrenches; and it consists in certain novel features,hereinafter first fully described,and then pointed ont in the claims.

In the accompanying drawings, which 1" ully illustrate my invention, Figure l is a side view of a wrench embodying my improvements. Fig. 2 is a similar view showing the device as it appears when being used to tighten a nut, and part of the casing being broken away. Fig. 3 is a detail view of the sliding jaw, and Fig. 4 is a detail view of the slide to which the pipe-bit is secured.

Referring to the drawings by letter,A designates the handle or operating-lever, provided with an enlarged portion, a, at one end, in which a transverse groove, a', is formed.

B designates the forked or U-shaped shank, which is pivoted in the groove a at the center The branches b b of the shank extend from the handle a suitable distance and diverge slightly toward their outer ends, which are firmly secured in the rigid jaw C byv any preferred means. This rigid jaw C has its opposite ends projected past the shank in the plane ofthe enlargement a, and its inner face at one end is made plain, while at its other end it is provided with the depression or hollowed-out portion c.

D designates the sliding jaw, which moves on one of the branches b of the shank to and end ofa link or connectingbar, E, the other end of which is pivotally secured in one end of the groove a of the enlargement a of the handle. In the opposite end. of the said groove I pivotally secure one end ofthe pipebit F, the opposite end of which is inclined inwardly toward the handlev and provided with a series of teeth, f, which are adapted to bite against the pipe when the wrench is applied thereto. rIhe outer or toothed end of the pipe-bit is supported and carried by a slide, G, which is mounted on the shank inthe same manner as the sliding jaw D, and is provided with two outwardly-projecting. parallel lugs, g g, between which the end of the bit is adj ustaoly secured by means of a pin or similar device inserted through the end of the bit, and one or another of a series of openings, g', formed transversely in the lugs g g. I am thus enabled to readily adjust the bit to the diameter of the pipe being operated on.

The operation of the device will, it is thought, be readily understood.

It will be observed that my wrench is a combined nut and pipe wrench, and as the operation of the two parts is substantially the same, a description of one will suffice. Whenv sliding jaw up against the nut and clamping the same against the rigid jaw. If thehandle be now forced farther outward, the nut will be turned, as will be readily understood. A reverse movement of the handle will loosen the hold of the sliding jaw on the nut and allow it to slip past the corners of the same, as will be readily understood, to secure a new hold on the same.

It will be seen that l have provided a simple and compact wrench which automatically adjusts itself to the nut or pipe, and it is thought the advantages of the same will be readily seen without a detailed reference thereto.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,is-

l. In a wrench, the combination of the handle, the shank pivotally secured thereto, the rigid jaw secured to the end of the shank, the slidingjaw movingalong the shank, and the link having its opposite ends pivoted, respectively, to the handle and the sliding jaw, substantially as set forth.

2.. The combination of the handle, the shank pivotally secured thereto, the rigid jaw secured to the end of the shank and having a depression, c, near its end, the slide moving on the shanlgand the bit having one end'pivoted link, the sli'de mounted on the other oted tothe handle and its other end adjustably bmneh ofthe shanlgand the bit pivoted to the [o pivoted to the slide, substantiallyas specified. handle and adjnstebly mounted in the slide,

3. The Combination of the handle, the substantially as described and shown.

5 branched shank pivoted thereto, the rigid jaw CHARLES WM. HALE.

secured to the end of the shank, the Slidingr Witnesses: jaw mounted on one of the branches of the J. F. POWELL,

shank and connected to the handle by :L piv- WV. S. ROBERTSON. 

